家用电脑系统通常由主机及软盘驱动器、硬盘驱动器、打印机、显示器、键盘、UPS不间断电源等外部设备组成,外部设备故障将引起许多故障。而外部没备故障大都是由于缺少日常维护与保养引起的。所以,做好外那设备的日常维护与保养是降低家用电脑系统故障率的有效手段之一。 Home computer systems usually consist of external devices such as host and floppy disk drives, hard disk drives, printers, displays, keyboards, and UPS uninterruptible power supplies. External device failure can cause many problems. Most of the external equipment failure is due to the lack of routine maintenance and maintenance caused. Therefore, doing a good job outside the routine maintenance of equipment is one of the effective ways to reduce the failure rate of home computer systems.